AP8802. General Description. Features. Applications. Typical Application Circuit. 1A LED Step-down Converter. Figure 2: Typical Application Circuit
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1 Features General Description LED driving current up to A High efficiency up to 9% Operating input voltage up to 4V High switching frequency up to 500kHz PWM/DC input for dimming control Built-in output open-circuit protection SOP-L, SOP-L-EP and DFN are available in Green Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note ) The AP0 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to thirteen LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of V to 4V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP0 switches at frequency up to 500kHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP0 is set via an external resistor connected between the V IN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.V or lower at CTRL shuts down the output at and puts the device into a low-current standby state. Applications Commercial & industrial lighting Small LCD panel backlight Appliances interior lighting Architecture Detail lighting Typical Application Circuit Figure : Typical Application Circuit AP0 Rev. of 5 MARCH 009
2 Ordering Information AP 0 XX G - X Package S : SOP-L SP : SOP-L-EP FN : DFN Green G : Green Packing 7/ 3 : Tape & Reel Device Package Packaging 7 /3 Tape and Reel Code (Note ) Quantity Part Number Suffix AP0SG-3 S SOP-L 500/Tape & Reel -3 AP0SPG-3 SP SOP-L-EP 500/Tape & Reel -3 AP0FNG-7 FN DFN /Tape & Reel -7 Notes:. EU Directive 00/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at Pad layout as shown on Diodes Inc. suggested pad layout document AP000, which can be found on our website at AP0 Rev. of 5 MARCH 009
3 Pin Assignments () SOP-L () SOP-L-EP ( Top View ) ( Top View ) SET NC V IN 7 AP CTRL SET NC V IN 3 4 AP CTRL (3) DFN ( Top View ) SET 0 CTRL 9 NC 3 AP0 NC NC 4 7 V IN 5 6 Pin Descriptions Pin Name SET CTRL V IN NC Description Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI. pin Set Nominal Output Current Pin. Configure the output current of the device. Dimming and On/Off Control Input. Input voltage of 0.V or lower forces the device into low current standby mode and shut off the output. A PWM signal allows the output current to be adjusted above or below the level set by the resistor connected to SET input pin. The input impedance is about 50kΩ, and if the pin is left open V CTRL = V REF Input Supply Pin. Must be locally bypassed. No connection AP0 Rev. 3 of 5 MARCH 009
4 Block Diagram SET V IN Voltage Regulator 5V Sensing Block CTRL PWM/DC Control Comparator V REF.5V AP0 R Figure : AP0 block diagram Absolute Maximum Ratings Symbol Parameter Rating Unit V IN VIN pin voltage -0.3~50 V V voltage -0.3~50 V T J Junction Temperature 50 T LEAD Lead Temperature Soldering 300 T ST Storage Temperature Range -65 to +50 Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any condition. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices o C o C o C Recommended Operating Conditions Symbol Parameter Min Max Unit T A Ambient Temperature Range ºC AP0 Rev. 4 of 5 MARCH 009
5 Electrical Characteristics (V IN =V, T A =5 o C, unless otherwise specified) Symbol Parameter Conditions Min Typ. Max Unit V IN Operating Input Voltage.0-4 V I OUT Continuous switch current (Note 3) A I Q Quiescent Current µa F OSC Switching Frequency MHz V THD Internal Threshold Voltage mv V REF Internal Reference Voltage V SET SET pin input current V SET =V IN µa Rds(on) On Resistance of MOSFET I =0.A Ω I _Leakage Switch leakage current - - µa EN Voltage High ON V EN Voltage Low OFF V SOP-L (Note 4) - - C/W Notes: θ JA θ JC Thermal Resistance Junction-to-Ambient Thermal Resistance Junction-to-Case SOP-L-EP (Note 4) C/W DFN (Note 4) C/W SOP-L (Note 4) C/W SOP-L-EP (Note 4) C/W DFN (Note 4) C/W 3. Refer to figure 7 for the device derating curve. 4. Test condition for SOP-L, SOP-L-EP and DFN3030-0: Device mounted on FR-4 PCB, x, oz copper, minimum recommended pad layout on top layer and thermal vias to bottom layer ground plane. For better thermal performance, larger copper pad for heat-sink is needed. AP0 Rev. 5 of 5 MARCH 009
6 Application Information LED Current Control The LED current is controlled by the resistor RSET in Figure. Connected between V IN and SET the nominal average output current in the LED(s) is defined as: V I LED = R THD SET If the CTRL pin is driven by an external voltage (lower than.5v), the average LED current is: V I LED = V CTRL REF V R THD SET LED current Versus RSET and VCTRL 00 LED Current [ma] RSET value [Ohms] LED VCTRL =.5V LED VCTRL =.5V LED VCTRL = 0.65V Figure 3: LED Current setting Vs R SET and V CTRL AP0 Rev. 6 of 5 MARCH 009
7 Application Information (Continued) Inductor Selection This section highlights how to select the inductor suitable for the application requirements, in terms of switching frequency, LED current accuracy and temperature. Switching ILED = 700mA Frequency [khz] Inductor Value [uh] Figure 4: Switching Frequency Vs Inductor Value V - 3 LEDs 4V - 5 LEDs 4V - 0 LEDs The inductor influences the LED current accuracy that the system is able to provide. The following section highlights how to select the inductor in relation to the device packages and the LED current, while maintaining the chip temperature below 70 C. AP0 Rev. 7 of 5 MARCH 009
8 Application Information (Continued) AP0 DFN Minimum Recommended Inductor - LED Current A % Accuracy, <70 C Case Temperature Number of LEDs Legend 47µH 6µH 00µH 50µH 50uH 4 00uH 3 6uH 47uH Supply Voltage (V) Figure 5: DFN recommended inductor with A LED current AP0 SOPEP Minimum Recommended Inductor % Accuracy, <70 C Case Temperature, A Target Current Number of LEDs Legend 47µH 6µH 00µH 50µH 50uH 4 00uH 3 6uH 47uH Supply Voltage (V) Figure 6: SOPL-EP recommended inductor with A LED current AP0 Rev. of 5 MARCH 009
9 Application Information (Continued) AP0 SOP-L Minimum Recommended Inductor % Accuracy, <70 C Case Temperature Number of LEDs Legend 47µH 6µH 00µH 50µH 0µH 470µH 0uH 470uH 4 50uH 3 00uH 6uH 47uH Supply Voltage (V) Figure 7: SOP-L recommended inductor with 700mA LED current AP0 Rev. 9 of 5 MARCH 009
10 Application Information (Continued) Capacitor Selection The small size of ceramic capacitors makes them ideal for AP0 applications. X5R and X7R types are recommended because they retain their capacitance over wider voltage and temperature ranges than other types such as Z5U. A.µF input capacitor is sufficient for most intended applications of AP0. A 4.7µF input capacitor is suggested for application with an input voltage equal or higher than 40V. Diode Selection Schottky diodes, e.g. B00 or B00, with their low forward voltage drop and fast reverse recovery, are the ideal choice for AP0 applications. PWM Dimming A Pulse Width Modulated (PWM) signal with a max resolution of bit, can be applied to the CTRL pin to change the output current to a value above or below the nominal average value set by resistor RSET. To achieve this resolution the PWM frequency has to be lower than 500Hz. Thermal Considerations The graph below in figure, gives details for power derating. This assumes the device to be mounted on a 5x5mm PCB with oz copper standing in still air. Maximum Power Dissipation Power (W) Package Selection SOP-L - EP SOP-L DFN Ambient Temperature (Deg C) Figure : AP0 derating curves The device comes with a wide selection of packages. The suggested package is able to provide a case temperature below 70 C (with an ambient temperature of 5 C) for the combination of input voltage and load requested. AP0 Rev. 0 of 5 MARCH 009
11 Application Information (Continued) Figure 9: Suggested package for a A application AP0 - suggested ILED=700mA and 00µH Inductor SOP-L SOP-L-EP DFN SOP-L-EP DFN LEDs LEDs 0 LEDs 9 LEDs LEDs 7 LEDs 6 LEDs 5 LEDs 4 LEDs 3 LEDs LEDs LED Vin Figure 0: Suggested package for a 700mA application AP0 Rev. of 5 MARCH 009
12 Marking Information () SOP-L Logo Part Number ( Top View ) 5 AP0 YY WW X X 4 G : Green YY : Year : 0, 09,0~ WW : Week : 0~5; 5 represents 5 and 53 week X : Internal Code () SOP-L-EP Logo Part No. ( Top View ) 5 AP0 YY WW X X 4 E G : Green YY : Year : 0, 09,0~ WW : Week : 0~5; 5 represents 5 and 53 week X : Internal Code SOP-L-EP (3) DFN ( Top View ) X X YWX XX : Identification Code Y : Year : 0~9 W : Week : A~Z : ~6 week; a~z : 7~5 week; z represents 5 and 53 week X : A~Z : Green Part Number Package Identification Code AP0FNG-7 DFN A5 AP0 Rev. of 5 MARCH 009
13 Package Information (All Dimensions in mm) () Package Type: SOP-L 3.5/ / / Gauge Plane Seating Plane 0.6/0. Detail "A" 7 ~9 0.35max ~9.30/.50.75max. 0.5/0.5 Detail "A" 0 /.7typ 0.3/ /4.95 x x-.7 x-.55 Land Pattern Recommendation (Unit: mm) () Package Type: SOP-L-EP 0 / Detail "A" Exposed pad 7 ~9 3.5/ / max. 3.70/4.0.4Ref. 7 ~9 0.5/ Ref..30/.50.75max. Bottom View.7typ 0.3/ /4.95 0/ Gauge Plane Seating Plane 0.6/0. Detail "A" x-0.60 Exposed pad 5.4 6x-.7 x-.55 Land Pattem Recommendation (Unit:mm) AP0 Rev. 3 of 5 MARCH 009
14 R0.300 AP0 Package Information (Continued) (3) Package Type: DFN C 0.57/0.60 0/ C Seating Plane 0.5 A TOP MARK Side View 0.5Typ. C B X-.9/3..3/.5 A (Pin # ID) 0.5/0.55.9/3..5/.7 X- 0.5 B 0.375Typ. 0.50Typ. 0./0.3 Bottom View 0.0 C A B AP0 Rev. 4 of 5 MARCH 009
15 Taping Orientation For DFN Notes: 5. The taping orientation of the other package type can be found on our website at IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP0 Rev. 5 of 5 MARCH 009
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Description Pin Assignments is a low dropout positive fixed-mode regulator with A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications
More informationSBR5E45P5. Features and Benefits. Product Summary A = +25 C) Description and Applications. Mechanical Data. Ordering Information (Note 4)
Green 5A SBR SUPER BARRIER RECTIFIER Product Summary (@T A = +25 C) Features and Benefits ADVANCED NEW NEW INFORMATION V RRM (V) I O (A) V F(MAX) (V) I R(MAX) (ma) 45 5 0.6 0.28 Description and Applications
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2A CMOS LDO REGULATOR Description Pin Assignments The series are positive voltage regulator ICs fabricated by CMOS process. The ICs consist of a voltage reference, an error amplifier, a power transistor,
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ADJUSTABLE PRECISION SHUNT REGULATORS Description The series ICs are three-terminal adjustable shunt regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on
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AUTOMOTIVE GRADE MICROPOWER CURRENT MONITOR Description The is a micropower high side current sense monitor. This device eliminates the need to disrupt the ground plane when sensing a load current. Pin
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Green 2.5A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH Description Pin Assignments The AP2501 and AP2511 are single channel current-limited integrated high-side power switches optimized for Universal Serial
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LOW DROP LINEAR REGULATOR Description Pin Assignments The is a 3mA, adjustable and fixed output voltage, low dropout linear regulator. The device included pass element, error amplifier, band-gap, current
More informationMP MHz, 700mA, Fixed-Frequency Step-Up Driver for up to 10 White LEDS
MP3301 1.3MHz, 700mA, Fixed-Frequency Step-Up Driver for up to 10 White LEDS DESCRIPTION The MP3301 is a step-up converter designed to drive WLEDS arrays from a single-cell, lithium-ion battery. The MP3301
More informationZTL431AQ, ZTL431BQ ZTL432AQ, ZTL432BQ. Pin Assignments. Description. Features. Typical Application. Applications
AUTOMOTIVE COMPLIANT ADJUSTABLE PRECISION SHUNT REGULATOR Description The ZTL431AQ, ZTL431BQ, ZTL432AQ and ZTL432BQ are three terminal adjustable shunt regulators offering excellent temperature stability
More informationPART OBSOLETE - USE ZXGD3111N7. Features. GND GND Vcc GATE. GATE Top View Pin-Out
PART OBSOLETE - USE N7 V ACTIVE OR-ING MOSFET CONTROLLER IN SO8 Description is a V Active OR-ing MOSFET controller designed for driving a very low R DS(ON) Power MOSFET as an ideal diode. This replaces
More informationApplications. Tape and Reel Device Qualification Packaging AL5802LP4 Commercial X2-DFN ,000/Tape & Reel -7
Description The combines a high-gain NPN transistor with a pre-biased NPN transistor to make a simple small footprint LED driver. 30V, ADJUSTABLE CURRENT SINK LINEAR LED DRIVER Pin Assignments The LED
More informationBattery-powered Equipment Laptop, Palmtops, Notebook Computers Portable Information Appliances SOT25 (WR Package)
WIDE INPUT VOLTAGE RANGE, 150mA ULDO REGULATOR Description Pin Assignments The series is a positive voltage regulator IC. (Top View) The has features of wide input voltage range, high accuracy, low dropout
More informationAL8823. Pin Assignments. Description NEW PRODUCT. Features. Applications OUT COMP VCC GND VIN MR16 SINGLE BOOST LED CONTROLLER AL8823
MR16 SINGLE BOOST LED CONTROLLER Description Pin Assignments The is a boost controller that delivers an accurate constant current for MR16, AR111 and similar LED Lamps. With proprietary (Top View) control
More informationAZ1117I. Description. Pin Assignments NEW PRODUCT. Features Applications LOW DROPOUT LINEAR REGULATOR WITH INDUSTRIAL TEMPERATURE RANGE AZ1117I
LOW DROPOUT LINEAR REGULATOR WITH INDUSTRIAL TEMPERATURE RANGE Description Pin Assignments The is available in industrial temperature range low dropout three-terminal regulator. (Top View) The is optimized
More informationFeatures. Applications
5A LOW DROPOUT LINEAR REGULATOR Description Features The is a series of low dropout positive voltage regulators with a maximum dropout of.5v at 5A of load current. The series features on-chip thermal limiting
More informationAZ1085C. Features. Description. Applications. Pin Assignments. A Product Line of. Diodes Incorporated 3A LOW DROPOUT LINEAR REGULATOR AZ1085C INPUT
A LOW DROPOUT LINEAR REGULATOR Description Features The is a series of low dropout positive voltage regulators with a maximum dropout of.5v at A of load current. The series features on-chip thermal shutdown.
More informationV-DFN Pin1. Part Number Case Packaging DML1005LDS-7 V-DFN ,000/Tape & Reel
SINGLE CHANNEL SMART LOAD SWITCH Description and Applications The is a single channel load switch with very low onresistance in a small package. It contains an N-channel MOSFET for up to V BIAS-1.5V input
More informationNOT RECOMMENDED FOR NEW DESIGN USE AP3428 AP XX M10 G Packing Blank : Adj 18 : 1.8V 25 : 2.5V 33 : 3.3V. Packaging (Note 2)
NOT RECOMMENDED FOR NEW DESIGN USE AP3428 Features General Description High efficiency synchronous step-down converter with greater than 94% Current Mode Operation for faster transient response and better
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V ACTIVE OR'ING MOSFET CONTROLLER IN SO8 Description is a V Active OR ing MOSFET Controller designed for driving a very low R DS(ON) Power MOSFET as an ideal diode. This replaces the standard rectifier
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3A, 4MHz HIGH EFFICIENCY SYNCHRONOUS BUCK CONVERTER Description Pin Assignments The is a current mode, PWM synchronous buck DC/DC converter, capable of driving a 3A load with high efficiency, excellent
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More informationTop View. Part Number Compliance Case Packaging DMN6066SSD-13 Commercial SO-8 2,500/Tape & Reel DMN6066SSDQ-13 Automotive SO-8 2,500/Tape & Reel
60V DUAL N-CHANNEL ENHANCEMENT MODE MOSFET Product Summary Features and Benefits V (BR)DSS 60V R DS(on) T A = +25 C 66mΩ @ = V 4.4A 97mΩ @ = 4.5V 3.6A Low on-resistance Fast switching speed 0% Unclamped
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Green 2.5A SINGLE CHANNEL CURRENT - LIMITED POWER SWITCH Description Pin Assignments The AP2501A and AP2511A are single channel current-limited integrated high-side power switches optimized for Universal
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SYNCHRONOUS MOSFET CONTROLLER IN Description The is intended to drive a MOSFET configured as an ideal diode replacement. The device is comprised of a differential amplifier detector stage and high current
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Green 2.0A SINGLE CHANNEL CURRENT-LIMITED POWER SWITCH WITH LATCH-OFF Description The AP2401 and AP2411 are single channel current-limited integrated high-side power switches optimized for Universal Serial
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5V DUAL CHANNEL PROGRAMMABLE LOAD SWITCH Description Pin Assignments is an integrated dual N-channel load switch which features an adjustable slew rate that can be set using an external capacitor independently
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More informationGreen. Case Material: Molded Plastic. UL Flammability Classification 3.3V - 200V Nominal Zener Voltage Range
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RT85B 43V Asynchronous Boost WLED Driver General Description The RT85B is an LED driver IC that can support up to 0 WLED in series. It is composed of a current mode boost converter integrated with a 43V/.A
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